<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .left{
            background-color: pink;
            width: 33.33%;
            height: 800px;
            float: left;
        }

        .right{
            float: left;
            width: 66.66%;
            height: 800px;
        }

        .top{
            background-color: green;
            width: 66.66%;
            height: 400px;
        }

        .bottom-left{
            background-color: purple;
            height: 400px;
            width: 33.33%;
            float: left;
        }

        .bottom-right{
            background-color: slategray;
            height: 400px;
            width: 33.33%;
            float: left;
        }

    </style>
</head>
<body>
<div class="container">
    <div class="left">

    </div>
    <div class="right">
         <div class="top">

         </div>
        <div class="bottom">
            <div class="bottom-left"></div>
            <div class="bottom-right"></div>
        </div>
    </div>
</div>
</body>
</html>